Gets data from a MySql database, splits the data into separate columns, then uses one column in a URL to download something – and uses other column to name the file thats downloaded

for i in $(mysql -u root Project_Madapp -sNe 'SELECT CONCAT(id,",",name) AS yo FROM City WHERE type="actual"'); do parts=(${i//,/ }); wget -O "${parts[1]}.csv" "http://localhost/student_allocation_csv.php?format=csv&city_id=${parts[0]}"; done

Convert RAW files to JPEG in batch. Convert all files in a folder using a command. For this to work, first you must have ‘ufraw’ package installed. sudo apt-get install ufraw or sudo yum install ufraw depending on your OS.